Chemistry Flame Test Etc.

Question 1

Flame test: Lithium

Answer 1

Crimson

Question 2

Flame test: Sodium

Answer 2

Yellow

Question 3

Flame test: Copper

Answer 3

Blue- Green

Question 4

Flame test: Calcium

Answer 4

Orange- Red

Question 5

Flame test: Potassium

Answer 5

Lilac

Question 6

Soluble salts

All (5)

Answer 6

Lithium 
Sodium 
Potassium
Ammonium 
Nitrates

Question 7

Common Chloride solutions soluble except (2)

Answer 7

Silver

Lead

Question 8

Common Sulfate solutions soluble except

3

Answer 8

Lead
Barium
Calcium

Question 9

Common hydroxides insoluble except (4)

Answer 9

Lithium
Sodium
Potassium
Ammonium

Question 10

Common carbonates insoluble except (4)

Answer 10

Lithium
Sodium
Potassium
Ammonium

Question 11

Equation for mass (moles)

Answer 11

Mass = moles*Mr

Question 12

Equation for mass (conc)

Answer 12

Mass= concentration* volume

Question 13

Equation for moles (conc)

Answer 13

Moles = concentration* volume

Question 14

Name the 3 displacement reactions

Answer 14

KBr + Cl2 
Clear to yellow
KI + Cl2
Clear to brown
KI + Br2
Yellow to orange/brown

Question 15

Describe the Halogens (4)

Answer 15

Fluorine- pale yellow gas
Chlorine - green gas
Bromine- Brown liquid - brown gas
Iodine- black shiny solid- purple gas when sublimes (no liquid)

Question 16

Silver Halides precipitates and colours (3)

Answer 16

Silver chloride - white
Silver bromide - cream
Silver iodide - yellow

Question 17

Precipitate colour of carbonates (3)

Answer 17

Copper carbonate- blue-green
Silver carbonate- yellow
Rest of carbonates- white

Question 18

Precipitate colour of copper iodide

Answer 18

White

Question 19

Precipitate colours of lead chloride, bromide and iodide

Answer 19

White, white, yellow

Question 20

Precipitate colour of insoluble sulfates

Answer 20

White

Question 21

Common bromides soluble except (2)

Answer 21

Lead, silver

Question 22

Common iodides soluble except

Answer 22

Silver, Lead, Copper

Question 23

Test for chloride ion

Answer 23

Add silver nitrate forms a white precipitate

Question 24

Describe metallic bonding

Answer 24

Regularly arranged 
Positive ions
Giant lattice
Sea of delocalised electrons hold it together
Electrostatic forces between metal ions

Question 25

Properties of metallic bonding

Answer 25

``` Conduct electricity High BP and MP Malleable Shiny Sonorous Insoluble in water (react) Insoluble in non polar solvents ```

Question 26

Properties of covalent network bonding

Answer 26

``` Giant lattice High MP and BP Don’t conduct (except graphite) Insoluble in water Insoluble in non polar ```

Question 27

Properties of ionic

Answer 27

High MP and BP Conduct when molten Often soluble in water Insoluble in non polar

Question 28

Properties of macromolecular (DNA, polymers)

Answer 28

``` Weak intermolecular bonds Moderate BP and MP Don’t conduct electricity Insoluble in water Sometimes soluble ```

Question 29

Properties of Simple covalent

Answer 29

``` Weak intermolecular bonds Low BP and MP Don’t conduct electricity Insoluble in water , unless can bond with hydrogen in water Insoluble in non polar ```

Question 30

Describe E isomerism

Answer 30

Trans, not on the same side, double bind doesn’t allow rotation, stack better

Question 31

Describe Z isomerism

Answer 31

Cis on the same zide, also around double bond which doesn’t allow free rotation

Question 32

Name the 4 structural isomers

Answer 32

Chain isomerism- branched Position isomerism- position of branch Functional group isomerism- ether or alcohol Stereoisomerism- E trans , Z cis

Question 33

Standard conditions

Answer 33

298K (25 degrees) | 1 atmospheric pressure

Question 34

What is the ideal gas equation

Answer 34

PV= nRT ``` P- pressure (kPa) V- volume (m^3) Divide cm by 1mill n- number of moles R- gas constant T- temperature in Kelvin ```

Question 35

Properties of group 7

Answer 35

``` Less reactive going down MP and BP increases down Most are toxic Increase atomic radius Increase shielding Oxidising agents ```

Question 36

Oxidation states exceptions

Answer 36

H2O2- O has -1 and not -2 Hydrogen- state +1 unless with metal Fluorine- always -1

Question 37

Species containing ate include

Answer 37

Oxygen

Question 38

How to test for carbonates

Answer 38

Add dilute HCl | CO2 will form, limewater turns cloudy